Grate for ranges, &amp; c.



No. 642,378. I Patented Jan. 30, I900. P. B. SNEATH.

GRATE FOR amass, 8w.

(Application filed Aug. 22, 1899.) (No Model.)

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STATES PATENT Quince.

PEROIPHOR B. SNEATH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO LEONARD ZEISER, OF SAME PLACE.

GRATE FOR RANGES, 800.

SPECIFICATION forming part of Letters Patent N 0. 642,378, dated January 30, 1900. Application filed August 22, 1899. Serial No. 728,056. (No model.)

To aZZ whom, it may concern:

Be it known that I, PERGIPHOR B. SNEATH, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Grates for Ranges, &c. ,whereof the following is a specification, reference being had to the accompanying drawings.

My invention belongs to that class of grates in which the grate-bars are arranged to be vibrated or shaken in order to facilitate the discharge of ashes; and the object of my present improvements is to obtain a simple and inexpensive construction possessinggreat strength and easily operated in performing the functions required.

Referring to the drawings, Figure 1 representsa plan View of myimproved grate. Fig. 2 is a transverse vertical section on the line 2 2, Fig. 1. Fig. 3 is a central longitudinal section. Fig. 4 is a detail view in perspective, showing a portion of one grate-frame.

The general construction of the range or furnace is not indicated in the drawings; but it is such as to embody a rectangular frame A, having deep end pieces A A and side pieces a a of less vertical depth. This constitutes the housing or support of the grate proper. Running longitudinally through said frame is a rock-shaft B, mounted in suitable bearings in the end pieces A A and arranged slightly to one side of the longitudinal central line of the frame. Said shaft has a squared end 6, adapted to receive an ordinary handle or winch, wherebyit may be rocked or turned, as desired, and has also four squared portions M M N N, whose purpose will be hereinafter described. Beneath the side pieces are of the frame A are two rectangular grateframes 0 D, the outer grate-frame 0 having transverse grate-bars O and inclosing the inner grate-frame D, which has transverse gratebars D. The sides of said inner grate-frame D are suitably notched, as indicated at-E, so as to receive the transverse grate-bars O of the outer frame. The depth of these notches is such that the tops of the bars 0 are flush with the upper surface of the inner grateframe D, and thus the bars of both grateframes lie in the same horizontal plane. The two grate-frames O and D are thus capable of reciprocation relatively to one another in a direction parallel to their grate-bars. The

bars 0 are provided with raised projections O of angular form, and the bars D have similar projections 61, arranged at alternating intervals with the other projections.

On the top of the sides of the outer grateframe 0 are mounted inwardly-projecting fingers F, which closely overhang the inner grateframe D for a short distance, said projecting 6o fingers being arranged in line with the bars D of the inner grate-frame and being of such vertical height as toslide freely beneath the sides a ct of the frame-A.

The end pieces of the grate-frame C are formed with downward extensions G G, respectively, having elongated transverse slots 9 g. The grate-frame D has similar downward projections H H, similarly slotted at h h, the respective pairs of slots registering with one another, so that the rock-shaft B passes through the slots at the ends of both grate-frames and supports said frames, while allowing a lateral play thereof with relation to said rock-shaft. The inner faces of the said end piecesof the outer grate-frame C are provided near the top with inwardly-projecting lugs K K and K K arranged in pairs, whose members face one another with a short interval between. The outer faces of the end pieces of the grate-frame D are provided near the bottom of the extensions H H with similar pairs of lugs L L. Said e'nd pieces of the inner grate-frame D have slots 6 (2 (see Fig. 4) extending vertically downward from the center of the elongated slots h h, the width of said slots being slightly larger than the diameter of the rock-shaft B.

The rock-shaft B has, as before stated, four squared portions M M N N, situated as fol- 9o lows: The squared portion M is intermediate between the front end piece A and the proximate face of the end piece of the grate-frame O. The next squared portion M is between the inner face of the said end piece of the 5 grate-frame O and the proximate face of the front end piece of the grate-frame D. At the other end of the shaft the squared portion N is between the outer face of the rear end piece of the grate-frame D and the inner face of I00 the rear end piece of the outer grate-frame O, and the squared portion N is between the outer face of the rear,end piece of the grateframe 0 and the inner face of the rear end piece A of the frame A. The squared portions M and N engage operatively with correspondingly squared openings in yokeshaped lever-pieces P B, respectively. The upper arm of the lever-piece P engages between the lugs K K of the outer grate-frame C, and the lower arm of said lever engages between the lugs L L of the inner grate-frame D. The upper arm of the lever-piecesR engages between the lugs K K of the outer grate-frame, and the lower arm of said lever engages between the lugs L upon the rear of the inner grate-frame D.

A removable pin or stop S is mounted in the front end piece A and extends inwardly beneath the front end piece of the grate-frame (J, so as to afford a rest therefor at one side. As before stated, the rock-shaft B does not run on the central longitudinal axis of the frame A, but is arranged slightly to one side thereof, and the stop S is placed toward the side a of the frame A which is nearest to the rock-shaft B. When said stop is removed, the grate-frames O D are free to oscillate together with relation to the frame A in a direction indicated by the arrow in Fig. 2, such rotation being effected by merely-turning the rock-shaft B in the proper direction. The squared portions M and N upon said rockshaft serve as distance-pieces to maintain the proper relation between the ends of the outer frame A and the grate-frame C.

The operation of the device is as follows: lrVhen it is desired to rake the fire,'the handle is applied to the squared end I) of the rock-shaft B and the latter is oscillated backward and forward. The grate-frames are thus caused to reciprocate horizontally in opposite directions, and the projections upon the top thereof (together with the fingerpieces which extend over the grate-bars upon the frame D) thoroughly disintegrate the ashes and clinker, so that it is discharged at the bottom. The finger-pieces also tend to prevent any large lumps of ashes or coal from getting in between the side pieces of the grate-frames, and thus obviate the danger of jamming. When it is desired to dump the contents of the grate, the pin S is shifted outwardly from beneath the frame 0 and the entire grate revolved by turning the shaft B around until the grate-frame stands vertical, or nearly so. As the longer ends of the gratebars are on the side opposite to that which is supported by the pin S, the grate structure as a whole is slightly overbalanced on the side opposite to the pin S, and hence little or no strain is occasioned upon the pin.

The above-mentioned parts can readily be cast and made interchangeable, so that a very cheap structure is afforded, and the parts can be renewed as they become worn.

Having thus described my invention, I claim 1. The combination, with a supportingframe, of a pair of grate-frame adapted to reciprocate with relation to each other; a rockshaft supporting said grate-frames and engaging in elongated slots therein; a lever mounted upon said rock-shaft; and lugs upon said grate-frames arranged in the described relation to said lever, whereby oscillation of the rock-shaft is permitted to effect the reciprocation of said frames relatively to each other, substantially as set forth.

2. The combination, with a supportingframe, of a pair of grate-fram es adapted to re ciprocate with relation to each other; a rockshaft supporting said grate-frames and engaging in elongated slots therein; a lever mounted upon said rock-shaft; lugs upon said grate-frames arranged in the described relation to said lever, whereby oscillation of the rock-shaft is permitted to effect the reciprocation of said frames relatively to each other; and a pin mounted in said inclosing frame and projecting beneath one of said grate-frames, substantially as set forth.

3. The combination, with a supportingframe, of an inner grate-frame having slotted sides; an outer grate-frame inclosing said inner grate-frame, the grate-bars of said outer grate-frame being arranged to slide freely in the slots of the inner grate-frame; a rockshaft extending longitudinally through said frame and arranged in elongated slots in the inner and outer grate-frames, said rock-shaft having a portion of its surface squared; a rocking-lever detachably mounted upon the squared portion of the rock-shaft and engaging said grate-frames; and a pin mounted in the outer frame and adapted to engage beneath one of said grate-frames, substantially as set forth.

P. B. SNEATH.

Witnesses:

LEONARD Znrsns, JAMES H. BELL. 

